Cleaning system and method for operating a cleaning system

ABSTRACT

The invention relates to a cleaning system, comprising a cleaning cart and an external accessory device, wherein the cleaning cart comprises a frame having rollers for moving on a ground surface, at least one receptacle for receiving and/or carrying cleaning utensils, and an interaction device having a hand-actuatable interaction element, wherein the accessory device is portably configured and a user application program for processing cleaning-related information is executably stored on the accessory device and/or operable via the accessory device, wherein the interaction device and the accessory device are coupleable with one another via a communication connection, and wherein, depending on an actuation of the interaction element by the user, input information for operation of the user application program is transmittable from the interaction device to the accessory device and is processable by the accessory device. The invention further relates to a method for operating a cleaning system.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of international application number PCT/EP2021/063696, filed on May 21, 2021, and claims the benefit of German application number 10 2020 116 801.2, filed on Jun. 25, 2020, which are incorporated herein by reference in their entirety and for all purposes.

FIELD OF THE INVENTION

The present invention relates to a cleaning system comprising a cleaning cart, and a method for operating a cleaning system comprising a cleaning cart.

BACKGROUND OF THE INVENTION

Despite modern cleaning machines, in particular in the field of interior cleaning, some of which can be automated, cleaning carts are of great importance in the field of daily cleaning. A particular emphasis is on cleaning tasks that are to be manually performed in larger buildings, such as office buildings, hotels, nursing facilities, hospitals, airports, event buildings, or the like. The cleaning carts serve to carry cleaning utensils. Examples of these include, in particular, manually guided cleaning tools, receptacles for storing cleaning accessories, cleaning liquids or cleaning chemicals, receptacles for receiving dirty liquid or waste, cleaning cloths, or other items for surface cleaning. Usually, receptacles for receiving and/or carrying such cleaning utensils are provided on the cleaning carts.

The cleaning carts comprise rollers so that they can be moved, usually guided by hand, over a ground surface by a user. For example, a handle device is provided for the user in order to enhance handling. The rollers of the cleaning carts can be stationary, i.e., unsteered. Alternatively, provision can be made for the rollers to be steered rollers. A combination of unsteered rollers and steered rollers can also be provided.

The cleaning carts usually comprise a frame at which the rollers are arranged. In the present case, for example, an open frame, for example for arranging receptacles, can be considered to be a frame. In particular, a closed frame in the sense of a corpus comprising, for example, side walls and/or doors for closing off a receiving space for cleaning utensils can also be considered to be a frame in the present case.

It is desirable for cleaning tasks that use cleaning carts to have an efficient and needs-based execution of cleaning tasks in which, for example, a plurality of spaces to be cleaned is provided. Here, it can be required for the spaces to be cleaned in a predetermined sequence. In certain instances, it is required to perform different cleaning tasks in different spaces, wherein different cleaning utensils may be used. For this reason, for example, the need exists, when commencing work, to equip the cleaning cart as needed, preferably wherein all the necessary cleaning utensils are onboard and superfluous cleaning utensils are not carried along.

In particular, as used herein, the term “space” can be understood to relate to any area that is to be cleaned. The space can have physical boundaries such as walls. Alternatively or in addition, virtual boundaries can be provided in the sense of a predefinable definition where the space ends without the presence of physical boundaries. The space can be located in an indoor area and in an outdoor area. Correspondingly, a space can be, for example, a room, a corridor, a hall, a foyer, a pathway, a square or some other type of open area.

DE 10 2018 111 423 B4 describes a cleaning system comprising a cleaning cart and a data processing device. The cleaning cart comprises a frame that is provided with a unique machine-readable identifier. The cleaning cart is thereby identifiable in the data processing device. The data processing device stores assemblies of cleaning utensils tuned to cleaning tasks. Alternatively or in addition, the status of the cleaning cart is stored in the data processing device.

WO 2019/092062 A1 describes a cleaning cart comprising a support body and a communication device holder for receiving a mobile communication device, wherein the communication device holder is fixed to the support body.

An object underlying the present invention is to provide a cleaning system and a method for operating a cleaning system which enables user-friendly and reliable execution of cleaning tasks.

SUMMARY OF THE INVENTION

In a first aspect of the invention, a cleaning system is provided. The cleaning system comprises a cleaning cart and an external accessory device. The cleaning cart comprises a frame having rollers for moving on a ground surface, at least one receptacle for receiving and/or carrying cleaning utensils, and an interaction device having a hand-actuatable interaction element. The accessory device is portably configured and a user application program for processing cleaning-related information is executably stored on the accessory device and/or operable via the accessory device. The interaction device and the accessory device can be coupled with one another via a communication connection. Depending on an actuation of the interaction element by the user, input information for operation of the user application program can be transmitted from the interaction device to the accessory device and can be processed by the accessory device.

In a second aspect of the invention, a method for operating a cleaning system is provided. The cleaning system comprises a cleaning cart which is movable via rollers on a ground surface and is configured for receiving and/or carrying cleaning utensils. The cleaning cart comprises an interaction device having a hand-actuatable interaction element. The method comprises:

-   -   detecting an actuation of the interaction element;     -   transmitting input information for a user application program         from the interaction device to a portable external accessory         device;     -   processing the input information for operating the user         application program.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing summary and the following description may be better understood in conjunction with the drawing figures, of which:

FIG. 1 illustrates a perspective representation of a preferred embodiment of a cleaning system in accordance with the invention, comprising a cleaning cart in accordance with the present disclosure;

FIG. 2 illustrates an enlarged representation of detail A of FIG. 1 , wherein receptacles for cleaning utensils are attached to the cleaning cart;

FIG. 3 illustrates a perspective representation of a handle device of the cleaning cart of FIG. 1 with an accessory device held thereto;

FIG. 4 illustrates a further perspective representation of the handle device of FIG. 3 without accessory device;

FIG. 5 illustrates a side view of an interaction device comprising an interaction element of the cleaning cart of FIG. 1 , which interaction device is arranged at the handle device;

FIG. 6 illustrates an enlarged representation of detail B of FIG. 4 ;

FIG. 7 illustrates a side view of the cleaning cart of FIG. 1 , in partial representation;

FIG. 8 illustrates a block diagram of the cleaning system of FIG. 1 ;

FIG. 9 illustrates a flow diagram for creating and executing a cleaning plan for cleaning spaces with use of the cleaning system in accordance with the invention;

FIG. 10 illustrates schematically a display screen of an accessory device of the cleaning system in accordance with the invention;

FIGS. 11 and 12 illustrate schematically a display screen of an accessory device and a display screen of an interaction element of the cleaning system in accordance with the invention;

FIG. 13 illustrates schematically a display screen of an interaction element of the cleaning system in accordance with the invention and an accessory device stowed away in a pocket of the user; and

FIGS. 14 and 15 illustrate perspective representations of the cleaning system in accordance with the invention in which further cleaning carts are used, wherein the cleaning carts are in accordance with the invention within the scope of the present disclosure.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

Although the invention is illustrated and described herein with reference to specific embodiments, the invention is not intended to be limited to the details shown. Rather, various modifications may be made in the details within the scope and range of equivalents of the claims and without departing from the invention.

The present invention relates to a cleaning system, comprising a cleaning cart and an external accessory device, wherein the cleaning cart comprises a frame having rollers for moving on a ground surface, at least one receptacle for receiving and/or carrying cleaning utensils, and an interaction device having a hand-actuatable interaction element, wherein the accessory device is portably configured and a user application program for processing cleaning-related information is executably stored on the accessory device and/or operable via the accessory device, wherein the interaction device and the accessory device are coupleable with one another via a communication connection, and wherein, depending on an actuation of the interaction element by the user, input information for operation of the user application program is transmittable from the interaction device to the accessory device and is processable by the accessory device.

In the cleaning system in accordance with the invention, an external accessory device is used in addition to the cleaning cart. In particular, provision can be made for the cleaning system to comprise more than one cleaning cart and/or more than one external accessory device. The cleaning carts and/or the accessory devices can be identically configured or differently configured. Provision can be made for a respective accessory device to be selectively used with one of the cleaning carts or vice versa.

A user application program can be operated via the accessory device, which user application program can, for example, be stored on the accessory device itself—in particular as what is known as an “app”—and/or it can be stored at a spatially remote location from the accessory device and executed there—for example, on a server or in a “cloud”. The user application program allows the processing of cleaning-related information, for example for executing a cleaning plan within the scope of which cleaning tasks are performed with use of the cleaning cart.

The cleaning cart comprises an interaction device which can be coupled with the accessory device via an at least unidirectional communication connection. The interaction device comprises the interaction element for facilitated handling of the accessory device and for operation of the user application program. The interaction element is hand-actuatable, preferably wherein the interaction element can be operated by the user even with gloves on, which, for example, would render it difficult or even impossible to use a touch-sensitive display unit of the accessory device. Inputs by the user via the interaction element can be transferred to the accessory device and processed by the accessory device for operation of the user application program. For example, the inputs by the user can be utilized as cleaning-related information in an execution of a cleaning plan. It is conceivable, for example, for the user to acknowledge indications of the user application program or to confirm the planned or completed cleaning of spaces. Possible inputs will be discussed below.

The interaction device together with the interaction element forms a user-friendly interface for interacting with the user application program via the accessory device. Preferably, operation of the accessory device itself, i.e., physically at the accessory device, can thereby be dispensed with. A more hygienic operation of the accessory device is made possible by the fact that the user can utilize the interaction element. However, it is preferably provided for the user to be able, alternatively or in addition, to physically operate the accessory device.

The interaction element preferably allows furthering the acceptance of the use of accessory devices in connection with cleaning carts and a user application program for performing cleaning tasks. For example, if the accessory device is utilized without the interaction element, this could induce among cleaning service providers, clients and third parties the impression that the user is not working but wasting time in operating the accessory device. This impression can be precluded by using the interaction element on the cleaning cart.

The communication connection between the interaction device and the accessory device can be wireless and/or wired.

By way of example, the communication connection is a radio connection. In particular, a Bluetooth connection or a WiFi connection can be provided.

It is conceivable, for example, to use an NFC connection between the interaction device and the accessory device, which requires spatial proximity to one another of the two components. Such proximity can certainly be advantageous and/or desirable in order, for example, to ensure a secure communication connection and/or to ensure that a display unit of the accessory device can be utilized and is located within the user's field of view.

Advantageously, the interaction device and the interaction element are configured such that they are functional with accessory devices having different configurations and different software stored thereon, in a system-independent (platform-independent and/or software-independent) manner.

For example, the interaction device can comprise a microprocessor for processing the inputs by the user on the interaction element. It is conceivable for a computer program to be runnable on the microprocessor, in particular via embedded software. The software can be update-enabled. Software actualizations (updates) can, for example, be transferable from the accessory device to the interaction device.

The at least one receptacle for cleaning utensils can be configured in different ways. For example, provision is made for at least one receptacle, at least one holding part for hanging and/or for clampingly and/or latchingly holding the cleaning utensil, a support part on which cleaning utensils can be supported, etc.

Preferably, the accessory device comprises an output unit. Via the output unit, for example, cleaning-related information of the user application program can be output to the user.

For example, a visual output unit in the form of a display unit can be provided as the output unit, in particular with a controllable display screen.

Alternatively or in addition, an audible and/or a haptic output unit can be provided as the output unit, for example.

By way of example, the accessory device can be a smartphone or a tablet computer. In addition to the possibility of operating the accessory device via the interaction element, conventional operation of the accessory device can preferably be possible. In particular, as has already been mentioned, physical interaction is conceivable here, for example via a touch-sensitive display unit (touchscreen). Alternatively or in addition, provision is made, for example, for voice control and/or for gesture control that utilizes a camera of the accessory device.

It can be advantageous for output information of the user application program to be transmittable from the accessory device to the interaction device and for the interaction device to comprise an indication unit for outputting indications to the user depending on the output information. In this way, in particular, a bidirectional communication connection can exist between the accessory device and the interaction device. The user can be provided with indications on the indication unit, for example for executing a cleaning plan, depending on the user application program.

By way of example, the indication unit can be a visual indication unit. The visual indication unit can be configured in different ways. For example, provision is made for a controllable display screen. Alternatively or in addition, the indication unit can be or comprise a lighting device that provides indications luminously by way of different colours, for example. Light elements, for example LED diodes, can be provided.

For example, a single-segment display or a multi-segment display is provided for a visual indication unit.

Alternatively or in addition, the indication unit can be configured for audible and/or haptic indications. This allows indications to be provided audibly via a speaker and/or haptically, for example by vibration.

The brightness of the visual indication unit, the volume of the audible indication unit and/or the intensity of the haptic indication unit can be adjustable.

It is advantageous for the interaction element to comprise or form the indication unit. In this way, a separate indication unit can be dispensed with. This enables the interaction device to be built compact with simple structure. Indications that are output on the interaction element can preferably be easily perceived by the user. If, when operated, the interaction element is in the field of view of the user, possible indications can thereby be directly perceived by the user. Therefore, arranging the indication unit on the interaction element increases the probability that indications will be perceived by the user.

The output information and, depending thereon, the indications on the indication unit can be configured in different ways. For example, the output information can comprise:

-   -   Representation of images;     -   Representation of texts;     -   Playing videos, for example to illustrate cleaning work to be         performed;     -   Color-coded information using, for example, the lighting color;     -   Feedback information. For example, if the user actuates the         interactive element, receipt of a corresponding input         information can, in turn, be acknowledged via an output         information. By way of example, an output information that is         conveyed by way of text, color, image, sound and/or vibration is         conceivable.     -   Feedback information depending on erroneous or unprocessable         input information. By way of example, inputting errors are         conveyed by text, color, image, sound, and/or vibration.     -   Spontaneous indications transmitted to the user by the user         application program (“push messages”).

For example, it has proven to be advantageous for the interaction element to be a rotary knob or to comprise a rotary knob. In this way, the interaction element can be particularly readily operated. For example, a diameter of approximately 5 cm to 10 cm can prove to be advantageous for a facilitated handling of the rotary knob.

In a preferred embodiment, an axis about which the rotary knob can be rotated can, for example, have an angle of 45° or less relative to a vertical. Here, a “vertical” is considered to be an axis perpendicular to a plane of contact with the ground surface defined by the rollers, wherein the plane of contact is considered to be horizontally oriented and the cleaning cart is assumed to be in its intended use on the ground surface.

Preferably, the angle can be less than 30° with respect to the vertical.

Preferably, the rotary knob can have, on an outer circumference thereof, a knurling comprising ridges and/or nubs in order to facilitate its handling by the user, for example with gloves.

For example, the interaction device can evaluate a position of the rotary knob and/or a speed at which the rotary knob is rotated, for determining the input information.

It can be advantageous for the interaction element to be or comprise a push button or a toggle button. For example, the interaction device can evaluate the input information by pressing or by tilting the interaction element. For example, a return member can be provided by way of which the interaction element, after it has been pressed or tilted, returns to an initial position in the sense of a base position.

It can be advantageous for the interaction element to provide haptic feedback in response to inputs by the user.

It can prove particularly advantageous in practice if, for example, the interaction element is or comprises a combined rotary toggle knob and/or a rotary push knob. It has been found in practice that this is a way of providing a multifunctional interaction element that is particularly easy to handle.

The interaction device, and the interaction element in particular, is preferably waterproof, but at least splash-proof, and/or dust-proof. A possibility of malfunction of the interaction device due to undesired ingress of water and/or dust is thereby prevented. For example, conformity with at least one standard of the Ingress Protection (IP) rating is provided. For example, provision is made for the interaction device to be at least IP54 rated, preferably at least IP65 rated.

Advantageously, the cleaning cart comprises a handle device having at least one handle element for guiding the cleaning cart by a user. The cleaning cart can be moved over the ground surface via the handle device in a user-friendly manner.

By way of example, the handle device comprises two handle elements spaced a distance apart from each other. Provision can be made for the handle elements to be substantially horizontally oriented and to have the user's fingers grip vertically therearound. For example, a handle device having two handle elements that are substantially vertically oriented and can have the user's fingers grip horizontally therearound can prove to be ergonomic.

The at least one handle element can be height-adjustable and thereby preferably adjusted to the user's body height.

It is advantageous for the interaction element to be arranged at or comprised by the handle device. The interaction element is thereby readily accessible to the user. User friendliness is thereby enhanced. By way of example, the interaction element is positioned between two handle elements of the handle device spaced a distance from one another, and is in particular substantially centrally positioned at the handle device.

Provision can be made for the interaction device as a whole to be arranged at or comprised by the handle device.

Preferably, the handle device is releasably fixable to the frame of the cleaning cart. Advantageously, this offers the possibility of fixing the handle device to the cleaning cart at a different position as desired by the user. Alternatively or in addition, the handle device can be fixed to a different cleaning cart, for example.

Where the handle device is releasable from the cleaning cart, it is advantageous for the interaction element to be arranged at the handle device, as has been explained above. For example, the advantages of the invention can be achieved with a plurality of cleaning carts, to which the handle device can be selectively fixed, without having to hold a plurality of interaction devices in inventory for that purpose.

For connection to the cleaning cart, the handle device and the frame comprise corresponding connecting elements, for example. The connecting elements can enable a clamping and/or a latching connection, for example. A blocking device can be provided with which release of the handle device from the cleaning cart can be prevented.

Preferably, connecting and/or releasing the handle device can be effected by hand and/or without tools.

Provision can be made for the accessory device to be located spatially remotely from the cleaning cart, even while a communication connection exists between the accessory device and the interaction device. In this case, in particular, a wireless communication connection is advantageous. By way of example, the accessory device is worn on the person of the user, for example in a pocket.

It can prove to be advantageous for the cleaning cart to comprise a receiving unit having a receptacle for receiving the accessory device. The accessory device can be positioned at or in the receptacle. Preferably, here, the accessory device assumes a defined position on the cleaning cart. In particular, this can prove to be advantageous for the reliability of the communication connection. By the positioning in the receptacle, it is possible, for example, to ensure that a display unit of the accessory device is in the user's field of view. For example, indications of the user application program are displayed on the display unit and can thereby be more easily discerned by the user when the accessory device is positioned in the receptacle.

For example, it can prove to be advantageous for a surface normal of the display unit to have an angle to the horizontal of approximately 20° to 70°, wherein the horizontal is considered to be oriented parallel to the contact plane of the rollers in this case.

It can be advantageous for it to be determinable whether an accessory device is positioned in the receptacle. By way of example, the arrangement of the accessory device is inductively detected. For example, when the accessory device is arranged in the receptacle, indications can be output via the indication unit of the cleaning cart instead of via the indication unit of the accessory device.

It is advantageous for the receptacle to be arranged at or comprised by the handle device. Advantageously, it is thereby possible for the accessory device and its display unit to be particularly readily seen and/or operated by the user.

If the handle device is releasable, this then provides a way of fixing the receptacle together with the accessory device to a different cleaning cart and/or at a different position on the cleaning cart. The advantages that can be achieved by providing the receptacle can thereby preferably be achieved with more than one cleaning cart.

The receptacle is preferably positioned between two handle elements spaced a distance from each other, and is in particular substantially centrally positioned at the handle device. When the interaction element is arranged at the handle device, the receptacle is preferably arranged downstream of the interaction element, relative to the direction of access, so that the interaction element can be accessed and is not obscured by the accessory device.

Provision can be made for the receiving unit as a whole to be arranged at the handle device.

Advantageously, the receptacle is variable in size. Correspondingly, the receiving unit can comprise or form an adapter unit that can be adapted to accessory devices of different sizes and permits the reception of different accessory devices.

For example, provision can be made for the receptacle to be arranged between two holding elements which are movable relative to one another, and for the respective accessory device to be held between the holding elements, in particular in a form-locking manner. For example, one holding element is arranged on a support part which is displaceably configured in order to change the size of the receptacle. For example, the support part is displaceably supported on the handle device. The position of the support part relative to the handle device can, for example, be fixable in order for the size of the receptacle to be maintained and the accessory device to thereby be held in a particularly reliable manner.

The receiving unit can comprise a support part against which the accessory device can be contacted. For example, the accessory device, on a rear side thereof facing away from a display unit, can be supported against the support part, in area contact therewith. In particular, the support part is the aforementioned support part that is displaceable relative to the handle device.

Preferably, the receiving unit comprises a blocking element for securing the accessory device against removal from the receptacle. This ensures that the accessory device cannot inadvertently be removed. In particular, unauthorized removal can be prevented by, for example, providing for the blocking element to be secured by way of a lock cylinder or similar securing device and allowing the receptacle to be releasable for removal of the accessory device only with use of the proper key.

Provision can be made for the accessory device to be secured via the blocking element in a direct or indirect manner. In the latter case, for example, the receptacle is blocked by the blocking element against being expanded so that the accessory device cannot be removed.

In a preferred embodiment, for example, a blocking element can be provided which is in engagement with a support part of the receiving unit, thereby preventing the support part from being displaced, in particular relative to the handle device.

It is advantageous for a charging unit for charging the accessory device to be arranged at the receiving unit or for the receiving unit to comprise a charging unit. An energy storage device of the accessory device can thereby be charged while the latter is positioned in the receptacle. The operating time of the accessory device is thereby extended, in particular with regard to the performance of cleaning tasks in accordance with a cleaning plan.

It is conceivable, for example, for the accessory device to be charged contactlessly, by induction. To this end, for example, an inductive charging unit is provided at the aforementioned support part against which the accessory device is supported.

Alternatively or in addition, provision can be made for the accessory device to be charged through a wired connection. For example, an electrical connection element is provided for connecting a charging cable for the accessory device. The connection element is, for example, a USB port.

Preferably, the cleaning cart comprises an electrical energy storage device for providing electrical energy for the interaction device and/or for the accessory device. For example, the energy storage device is a rechargeable battery which is preferably removable. Preferably, a receptacle is provided for the energy storage device, which receptacle is advantageously arranged at the handle device. Preferably, the energy storage device provides power to the charging unit via which the accessory device can be charged.

As has been mentioned at the outset, the user application program can, for example, be executably stored on the accessory device and is installed there as an “app” for example.

Alternatively or in addition, in a preferred embodiment of the invention, provision is made for the cleaning system to comprise a data processing device which is spatially remotely arranged from the cleaning cart and from the accessory device and which is, or is capable of being brought, in communication connection with the accessory device, and for cleaning-related information of the user application program to be transferable from the accessory device to the data processing device and/or vice versa. The data processing device can be configured as a server and/or as a plurality of interconnected computers, for example as a “cloud”. By way of example, the user application program can be executed on the data processing device. Cleaning-related information can be exchanged between the accessory device and the data processing device. In this sense, for example, input information can be processed by the accessory device and transferred to the data processing device for execution by the user application program. Conversely, information of the user application program can be transferred from the data processing device to the accessory device. Outputs can be provided, for example, via an indication unit of the accessory device and/or an indication unit on the cleaning cart.

In particular, provision can be made for a cleaning plan to be provided via the data processing device and transferred to the user application program on the accessory device. For example, this gives the possibility of providing centrally created and managed cleaning plans for a plurality of cleaning carts and users, wherein cleaning tasks are executed in a decentralized manner.

For example, a report on the execution of the cleaning plan can be transmitted from the user application program on the accessory device to the data processing device and can be evaluated or collected there.

Advantageously, a cleaning plan can be stored in the user application program. The cleaning plan can comprise cleaning-related information. In particular, the cleaning plan serves to provide the user with information on cleaning tasks, preferably with regard to thorough, systematic and time-saving cleaning. Here, it is desirable to have flexibility in performing cleaning tasks, wherein for example depending on the occupancy or accessibility of a space and/or depending on cleanings to be performed on short notice, cleaning tasks can be rearranged in their order, added to, deleted, or the cleaning plan can be otherwise influenced.

By way of example, the cleaning plan comprises information on spaces that are to be cleaned.

For example, the cleaning plan comprises space-related information on items to be cleaned in at least one space. Provision can be made for information to be provided on items of at least one space that are not to be cleaned.

For example, the cleaning plan comprises space-related information on the type of cleaning of at least one item to be cleaned in a space.

For example, the cleaning plan comprises information pertaining to the equipment of the cleaning cart for executing the cleaning plan. For example, the cleaning cart can be equipped with the necessary cleaning utensils when commencing operation. In particular, the cleaning plan can store information on what cleaning utensils are provided for what cleaning task or overall, in particular for what space and/or for what item within a space.

Preferably, the cleaning plan is linked to a uniquely identifiable cleaning cart.

Preferably, the execution of the cleaning plan can be carried out via a workflow and/or in dialog mode with the user. For example, the user is informed of cleaning tasks to be performed via the accessory device and/or an indication unit on the cleaning cart. The user can interact via the interaction element in order, for example, to:

-   -   call up cleaning tasks;     -   acknowledge cleaning tasks;     -   confirm completion of cleaning tasks;     -   call up information on the status of the cleaning cart;     -   call up more detailed information for performing a cleaning         task.

Correspondingly, in execution of the cleaning plan, it is advantageous for instructions for the user to be providable on the accessory device and/or on an indication unit of the interaction device.

Advantageously, in execution of the cleaning plan, inputs by the user can be processed via the interaction element for performing the cleaning plan.

Advantageously, the cleaning plan can be changed, in particular after execution has started. For example, this enables versatile cleaning operation on a needs-dependent basis in the sense of “demand-based cleaning”. For example, as has already been mentioned, the user can be informed of a change in the upcoming cleaning tasks depending on the occupancy or the accessibility of a space. Non-accessible spaces and cleaning tasks linked thereto can be skipped. Cleaning tasks can be added for spaces that are accessible. Cleaning tasks required to be inserted can thereby be incorporated in the cleaning plan. The user can be informed of this for example by message (for example by push message).

The cleaning system, in particular the cleaning cart, can comprise at least one sensor device. Advantageously, via the at least one sensor device, information and/or statuses can be detected with regard to reliable performance of cleanings, for example with regard to execution of the cleaning plan.

For example, the cleaning system, in particular the cleaning cart, comprises a sensor device with which a space in which the cleaning cart is positioned can be identified. For example, the detection of the space enables the user application program to provide the user with information on a cleaning task that is to be performed in that space. Corresponding indications can be outputted, for example, via the accessory device and/or an indication unit of the cleaning cart. Alternatively or in addition, entry of the space can be logged for control of execution of cleaning tasks.

For data protection reasons, it can be advantageous if, in place of the position of the accessory device, the position of the cleaning cart is determinable via, for example, the identification of the space.

By way of example, the space can be identified via landmarks (“beacons”) arranged at or in the space, and these can be detected for example via Bluetooth. Alternatively or in addition, identification can be realized for example via RFID elements that are assigned to the space and are arranged at or in the space.

Advantageously, the at least one sensor device of the cleaning cart can comprise or form an RFID reader for detecting RFID elements.

Depending on the identified space, instructions for cleaning the space can advantageously be provided, depending on a cleaning plan stored in the user application program.

Provision can be made for a map of the spaces that are to be cleaned with use of the cleaning cart to be stored in the user application program, in particular linked to a cleaning plan. This provides the possibility of, upon identifying the space, determining the position of the cleaning cart within the map.

Advantageously, cleaning tasks that are assigned to the spaces are stored in the cleaning plan such that the numbers and/or the distances of empty trips, with no cleaning being performed, are minimized. By virtue of the identification of spaces, the possibility advantageously exists of detecting the sequence in which the spaces are cleaned. It is thereby possible, for an evaluation of the cleaning performed, to determine the efficiency of execution of the cleaning plan and, in particular, to determine whether spaces have been visited with the least possible numbers and/or distances of empty trips, with no cleaning being performed.

It is advantageous for the user to be given guidance for carrying out cleaning tasks in order to ensure the best possible cleaning result, avoid incorrect cleaning and/or to enable resource-preserving use of cleaning utensils. To this end, it can be advantageous for the user to receive guidance as to which cleaning utensil to use. This can be realized, for example, via the accessory device or an indication unit on the cleaning cart. In a preferred embodiment, the indicating elements as mentioned in the following are provided.

It can be advantageous for indicating elements to be arranged on receptacles of the cleaning cart and/or on receptacles for cleaning utensils, which indicating elements can be activated depending on the identified space. Preferably, the activation can be realized depending on a cleaning plan stored in the user application program for the space. The indicating elements can be configured for visual or audible indications. By way of example, light elements are used as visual indicating elements. The light elements can be activatable for the cleaning utensil that is to be used. Thus, by way of what is known as a “pick by light” system, the user can be provided with guidance to pick the correct cleaning utensils. An acknowledgement that a predetermined cleaning utensil has been picked can be communicated via the interaction element, for example.

The cleaning system, in particular the cleaning cart, can preferably comprise a sensor device with which the accessory device of the user and/or an authorization carrier of the user can be detected. The purpose of this is, for example, to verify the user as being authorized in order to prevent misuse and/or theft. Provision can be made that the user must be authorized in order to operate the cleaning cart. Upon positive identification, meaning that the user is authorized to operate the cleaning cart, a brake of the cleaning cart can be released, for example. Upon negative detection, when the user is not authorized, the brake remains blocked and the cleaning cart cannot be moved. Alternatively or in addition, provision can be made, for example, for access to certain receptacles for cleaning utensils and/or for the release of cleaning utensils in certain receptacles to be only possible if the user is authorized, whereas unauthorized users will not be able to remove the cleaning utensils.

The identification of the accessory device can advantageously be realized via the communication connection between the identification device and the accessory device.

The identification of the authorization carrier can be realized, for example, by way of an RFID reader on the cleaning cart, wherein the authorization carrier is an RFID element.

Provision can be made for the detection of the accessory device and/or the authorization carrier to be realized automatically, without action by the user.

The cleaning system, in particular the cleaning cart, preferably comprises a sensor device with which cleaning utensils that are carried on the cleaning cart can be detected. For example, when the cleaning cart is equipped, cleaning utensils can be detected individually or collectively by the sensor device and can, by outputting a positive or negative acknowledgement, be identified as cleaning utensils that are to be carried or not to be carried, respectively. This facilitates equipping the cleaning cart.

Alternatively or in addition, during the cleaning to be performed, in particular depending on a cleaning plan, the cleaning utensil can be checked for correctness by way of the sensor device, and corresponding feedback can be given to the user.

The recognition of the cleaning utensils can be RFID-based, for example, wherein an RFID reader is arranged on the cleaning cart and the cleaning utensils comprise RFID elements.

The cleaning system, in particular the cleaning cart, preferably comprises a sensor device with which the inventory of consumables that are carried on the cleaning cart can be detected. For example, fill levels of receptacles and/or the number of cleaning cloths onboard or used is/are detected. The user can be informed of consumables to be replenished, depending on the inventory. Where cleaning utensils are excessively used, the user can be prompted to use them more sparingly. Alternatively or in addition, the monitoring of the consumption of cleaning utensils can be used for documentation purposes, for example where cleaning cloths must be replaced after a certain amount of area cleaned, a certain amount of time, or in certain spaces.

As has been mentioned at the outset, the present invention further relates to a method.

A method, in accordance with the invention, for operating a cleaning system is proposed in accordance with the independent method claim, wherein the cleaning system comprises a cleaning cart which is movable via rollers on a ground surface and is configured for receiving and/or carrying cleaning utensils, wherein the cleaning cart comprises an interaction device having a hand-actuatable interaction element, and wherein the method comprises the following:

-   -   detecting an actuation of the interaction element;     -   transmitting input information for a user application program         from the interaction device to a portable external accessory         device;     -   processing the input information for operating the user         application program.

The advantages that have already been mentioned in the context of the description of the cleaning system in accordance with the invention can also be achieved using the method. In this respect, reference may be had to what has been described in the foregoing.

Advantageous exemplary embodiments of the method in accordance with the invention result from advantageous embodiments of the cleaning system in accordance with the invention. In this respect as well, reference may be had to what has been described in the foregoing.

The present disclosure further relates to a cleaning cart in accordance with the invention.

The cleaning cart in accordance with the present disclosure can be an independent invention, independent of the presence of the interaction device. The interaction device can be optionally provided.

The cleaning cart in accordance with the invention comprises a frame having rollers for moving on a ground surface, at least one receptacle for receiving and/or carrying cleaning utensils, and a handle device having at least one handle element for guiding the cleaning cart by a user, wherein the handle device can be releasably fixed to the frame of the cleaning cart, and wherein the cleaning cart comprises a receiving unit having a receptacle arranged at the handle unit for receiving a portable accessory device.

In particular, the accessory device can be a smartphone or a tablet computer.

A user application program for processing cleaning-related information can be executable on the accessory device. Alternatively or in addition, the user application program can be operable via the accessory device.

All further features as have been mentioned above in the context of the description of the cleaning system can be provided for forming advantageous embodiments of the above-mentioned cleaning cart in accordance with the invention. In particular, here, the user can interact with the user application program via the accessory device, specifically for executing a cleaning plan comprising at least one cleaning order.

FIG. 1 illustrates, in a perspective representation, a partial view of a cleaning system in accordance with the invention, generally designated by the reference numeral 10. In particular, the cleaning system 10 comprises a cleaning cart 12 and a portable electronic accessory device 14.

The cleaning system 10 can comprise more than one cleaning cart and more than one accessory device 14, as constituent parts thereof. Further cleaning carts 100 and 200 are shown in FIGS. 14 and 15 , and FIGS. 3 and 8 show a further accessory device 300 in place of the accessory device 14.

Overall, the cleaning system 10 in accordance with the invention can comprise a plurality of cleaning carts and a plurality of accessory devices, wherein at least one cleaning cart and one accessory device are provided. In the following, the invention is first discussed using, as examples, the cleaning cart 12 and the accessory devices 14, 300.

In the present case, a data processing device 16 located spatially remotely from the cleaning cart 12 and the accessory device 14 is a constituent part of the cleaning system 10. However, the data processing device 16 is merely an optional constituent part of the cleaning system 10 in accordance with the invention.

The cleaning cart 12 comprises a frame 18 having a frame lower part 20 and a frame upper part 22 spaced apart relative thereto in a height direction. The frame lower part 22 and the frame upper part 26 are connected to one another via support elements 24 in the shape of profiles.

Held to the frame lower part 20 are rollers 26 for moving the cleaning cart 12 on a ground surface 28. In the present case, the rollers 26 are steered rollers. Alternatively or in part, non-steered rollers can be provided.

In the present case, the rollers 26 define a contact plane which coincides with a plane defined by the ground surface 28 when the cleaning cart 12 is in its intended use. Here, it is assumed, without limitation, that the ground surface 28 is oriented horizontally.

Positional and orientational terms as used herein are to be understood to relate to an intended use of the cleaning cart 12 on the horizontally oriented ground surface 28.

To move the cleaning cart 12, a handle device 30 is provided for grasping by the user, who is not illustrated in the drawing.

The cleaning cart 12 serves to carry cleaning utensils, in particular for manual cleaning. To this end, the cleaning cart 12 comprises receptacles 31 for cleaning utensils.

The receptacles 31 comprise, for example, receptacles 32 which are held to the frame 18 and are configured, for example, in the shape of buckets. The receptacles 32 serve, for example, to receive cleaning liquids or cleaning cloths and manual cleaning tools (the latter not being shown) and can themselves be regarded as cleaning utensils. As a further cleaning utensil, for example, a receptacle 34 for receiving waste is held to the frame 18.

For example, at the frame upper part 22, receptacles 31 in the form of holding parts 36 can be fixed to the frame 18, these being removed in FIG. 1 but shown in FIG. 2 . By way of example, manual cleaning tools, such as wiping mops, flat mops or brooms, can be held to the holding parts 36 in a force-locking manner and removed therefrom as needed.

The cleaning cart 12 has its frame 18 configured as an open frame and does not have doors or side walls to close off the receiving space 38 formed between the frame lower part 20 and the frame upper part 22.

On the other hand, the cleaning carts 100, 200 comprise doors 40 and side walls 42 so that the receiving space 38 is at least partially closed off. It is understood that receptacles 31 for cleaning utensils can be provided behind the doors 40 and the side walls 42.

A top wall 46 can be provided at the frame 18 on a top side thereof.

As can be seen from FIGS. 3 and 4 in particular, the handle device 30 comprises a base element 48 and two handle elements 50. The handle elements 50 are fixed to the base element 48 and are spaced apart from one another.

In particular, provision can be made for the handle elements 50 to be held to the base element 48 in a height-adjustable manner. To this end, for example, the handle elements 50 can be pivoted about a horizontally oriented axis 52 relative to the base element 48. A securing device 54 can be provided to secure the handle elements 50 in a respective position.

The handle device 30, via its handle elements 50, is ergonomically configured and allows operating the cleaning cart 12 for longer periods of time without fatigue. To this end, the handle elements 50 are, in sections thereof, oriented vertically so that the fingers of a user can horizontally grip therearound. This hand pose reduces the strain on wrists and/or forearms.

In particular, the handle device 30 is releasably fixable to the cleaning cart 12. To this end, the handle device 30 and the cleaning cart 12 comprise corresponding connecting elements 56, 58.

The connecting elements 56 are arranged on the side of the base element 48 that faces towards the cleaning cart 12 (FIG. 4 ). In the present example, the connecting elements 56 comprise clamping elements 60 and latching elements 62.

The connecting elements 58 are arranged at the frame upper part 22 (FIG. 7 ) and are configured to correspond to the connecting elements 56. In the present example, the connecting elements 58 comprise clamping receptacles 64 for the clamping elements 60 and latching receptacles 66 for the latching elements 62.

To mount the handle device 30, the connecting elements 56, 58 can be brought into engagement with one another; the handle device 30 can thereby be releasably fixed to the cleaning cart 12.

The handle device 30 comprises blocking elements 68 which are configured to secure the latching elements 62 against unlatching from the latching receptacles 66. However, the blocking elements 68 can be transferred to a release position to enable the unlatching and hence the release of the handle device 30 from the cleaning cart 12.

In particular, provision can be made for the handle device 30 to be selectively fixable to the cleaning cart 12 at a plurality of positions. To this end, the cleaning cart 12 can have connecting elements 58 at a plurality of positions, in particular at the frame upper part 22.

In a corresponding manner, the handle device 30 can preferably be releasably fixed to further cleaning carts of the cleaning system 10. This is shown in FIGS. 14 and 15 by way of example for the cleaning carts 100 and 200. A plurality of connecting elements 58 can also preferably be arranged at the further cleaning carts 100, 200 such that the handle device 30 can be fixed to the cleaning carts 100, 200 at a plurality of positions.

The construction of the cleaning system 10 is simplified if only one handle device 30 with receiving unit for the accessory devices 14, 300 is provided.

In particular, the cleaning cart 12 together with the handle device 30 can be an independent invention within the scope of the present disclosure. The same applies analogously to the cleaning carts 100 and 200.

In the present example, the accessory device 14 is configured as a tablet computer 70. The tablet computer 70 comprises output units for outputting indications to the user, specifically indications of a user application program for cleaning tasks. In particular, a visual output unit is provided, configured as a display unit 72 having a controllable display screen. In addition, audible and haptic output units are provided.

The tablet computer 70 further comprises a communication device 74 via which communication connections can be established and used. In particular, here, the possibility exists of a Bluetooth connection, and the possibility exists of a communication connection via a telecommunications network or the Internet, in particular with the data processing device 16 (FIG. 8 ).

The accessory device 300 in the present example is configured as a smartphone 76. The smartphone 76 has dimensions different from those of the tablet computer 70, but it is also equipped with the corresponding output units, in particular the display unit 72, and the communication device 74.

The cleaning cart 12 comprises a receiving unit 78 having a receptacle 80, for receiving the accessory devices 14 or 300. In the present case, the handle device 30 comprises the receiving unit 78. This has proven to be advantageous because repositioning the handle device 30 also repositions an accessory device arranged in the receptacle 80, for example on one of the further cleaning carts 100 or 200. Separate receiving units are not required.

In addition, having the receptacle 80 arranged at the handle device 30 is advantageous in that the display unit 72 can be seen by the user and the content of the display screen can be readily perceived. Physical interaction with the accessory device 14 or 300 is facilitated for the user by arranging the receptacle 80 at the handle device 30. In particular, the display unit 72 has a touch-sensitive configuration in the form of a touchscreen, for physical interaction therewith.

Furthermore, the possibility exists of the accessory device 14 or 300 being controlled by voice or gestures.

The receiving unit 78 is arranged at the base element 48. The base element 48, at a top side thereof, forms a holding element 82 on which the accessory device 14 can be supported, in particular with a side face thereof (what is said in the following applies analogously to the accessory device 300, which is illustratively shown in FIG. 3 ). By way of example, the holding element 82 is groove-shaped in order to ensure a defined position of the accessory device 14.

Furthermore, the receiving unit 78 comprises a further holding element 84 which is positioned a distance apart from the holding element 82 and is arranged above the latter. The holding element 84 is fixed to a support part 86 of the receiving unit 78 and is arranged, for example, at an end thereof. The support part 86 is in engagement with the base element 48.

The accessory device 14 can, on a rear side thereof facing away from the display unit 72, be supported against the support part 86. In particular, the accessory device 14 can make area contact with the support part 86. The receptacle 80 is formed between the holding elements 82, 84 and the support part 86, and the accessory device 14 is positioned in the receptacle 80 in a preferably form-locking manner.

The holding element 84 can also be formed in the shape of a groove for form-locking reception of a side face of the accessory device 14.

When the accessory device 14 is in contact against the support part 86, a surface normal of the display unit 72 is upwardly inclined relative to the horizontal. The angle of inclination is preferably more than about 20°. The display unit 72 thereby faces towards the user and can be better seen.

The support part 86 is configured for movement, and in particular displacement, relative to the base element 48. In particular, the possibility exists of displacing the support part 86 relative to the base element 48 in a height direction, indicated by a double arrow 88. This allows the distance of the holding element 84 from the holding element 82 to be varied. The receptacle 80 is variable in its size in this way.

By the possibility of varying the size of the receptacle 80, the versatility of the receiving unit 78 is increased. In particular, the possibility is provided of positioning accessory devices of differing size in the receptacle 80, in particular on the one hand the tablet computer 70 and on the other the smartphone 76. Furthermore, the possibility exists of selectively supporting in the receptacle 80 tablet computers of different dimensions and/or smartphones of different dimensions.

In the present example, the support part 86 extends through through-openings in an upper wall 90 and in a lower wall 92 of the base element 48 (FIGS. 4 and 6 ). In particular, this provides guidance to the support part 86 which facilitates the handling of the receiving unit 78 for the user.

The support part 86 can be fixed in a respective relative position to the base element 48. To this end, a blocking element 94 is provided. The support part 86 and the blocking element 94 can be brought into engagement at a plurality of positions of the support part 86. To this end, the support part 86 is preferably provided with a serration 96 which can be brought into engagement with a corresponding serration 98 of the blocking element 94 (FIG. 6 ).

In the present example, the blocking element 94 is configured as a slide 102, which is preferably displaceable in a corresponding guide 104 on the base element 48. The displacement direction is indicated by double arrow 106 in FIG. 6 .

In a retracted release position of the slide 102, the serrations 96, 98 are out of engagement such that the support part 86 can be displaced. In particular, this provides the possibility of expanding the receptacle 80 to remove the accessory device 14. Conversely, the receptacle 80 can be reduced to fix the accessory device 14 in place.

The slide 102 can assume an advanced, engaged position in which the serrations 96, 98 are in engagement with one another. This secures the support part 86 against displacement so that the receptacle 80 is fixed in its size.

Via the blocking element 94 in the position of engagement with the support part 86, the accessory device 14 can thereby be secured in the receptacle 80 when it is received between the holding elements 82, 84 in a form-locking manner.

A securing device 108 is provided for fixing the blocking element 94 in at least the engagement position. The securing device 108 comprises, for example, a lock cylinder 110 which has an eccentric arranged thereon and engages in an opening of the blocking element 94 (FIG. 6 ). The lock cylinder 110 can only be turned by use of the mechanical key provided for this purpose.

In this way, when the blocking element 94 and the support part 86 are in engagement, an accessory device 14 received in the receptacle 80 is protected against theft. The accessory device 14 can be released by way of the mechanical key used to open the lock cylinder 110.

Provided at the receiving unit 78 is a charging unit 112 via which the accessory device 14 can be charged. The charging unit 112 comprises, for example, an inductive charging element 114 which is preferably integrated in the support part 86. When the accessory device 14 is arranged in the receptacle 80, electrical energy can be transferred from the charging element 114 to the energy storage device of the accessory device 14.

The charging unit 112 further comprises an electrical connection element 116, in the present case configured as a USB port. A charging cable can be connected to the connection element 116, which charging cable is connected to the accessory device 14.

To provide electrical energy, the cleaning cart 12 comprises an energy storage device 118. In particular, the energy storage device 118 is arranged at the handle device 30.

In the present case, the energy storage device 118 is a rechargeable battery 120, for example in the form of a rechargeable Li-ion battery.

The battery 120 can be releasably connected to a receptacle 122 at the handle device 30 which, in the present case, is arranged at the lower wall 92. This gives the possibility of charging the battery 120 externally to the cleaning cart 12. For example, the battery 120 is placed at the receptacle 122 when the cleaning cart 12 is placed into operation.

Via the energy storage device 118, the charging unit 112 can be supplied with electrical energy to power, and in particular charge, the accessory device 14.

Furthermore, the energy storage device 118 serves to supply electrical energy to further electrical components of the cleaning cart 12. Such further components include, in particular, an interaction device 124, sensor devices 126, 128 and 158 and a control device 130. The devices 124, 126, 128, 158 and 130 can be integrated, in whole or in part, in a common device. By way of example, such device can be arranged at or comprised by the handle device 30.

In particular, however, the cleaning cart 12 comprises the interaction device 124, which will be discussed in the following.

The interaction device comprises an interaction element 134 which is hand-actuatable by a user. The interaction element 134 serves to receive inputs by the user. Input information is transferred from the interaction device 124 to the accessory device 14 and can be processed by the latter.

In the present case, the interaction device 124 is arranged at the handle device 30. In the same way as in the case of the receiving unit 78, this offers the advantage that, when attaching the handle device 30 at a different position on the cleaning cart 12 or on one of the other cleaning carts 100, 200, the interaction device 124 will also be repositioned. An additional interaction device 124 is not required. Advantageously, the handle device 30 comprises the interaction device 124.

The interaction device 124 comprises a housing 136 which is inserted in an opening in the base element 48, and in particular in the upper wall 90 thereof. The housing 136 comprises a flange-like contact region 138 for making contact against an edge of the opening. The housing 136 engages in an intermediate space between the upper wall 90 and the lower wall 92.

The interaction element 134 is arranged above the base element 48. The interaction element 134 comprises a rotary knob which forms a push button and a toggle button at the same time and correspondingly forms a rotary push toggle button. Hereinafter, the interaction element 134 will be referred to as the knob 140 for simplicity.

The knob 140 is supported on the housing 136 for rotation about a rotational axis 142. In addition, the knob 140 can be tilted relative to the rotational axis 142 and can be pressed in an axial direction. The position of the knob 140 relative to the housing 136 during rotation thereof, the speed at which it is rotated, a possible tilted position, and a pressure on the knob 140 can be evaluated by an electrical device 144 of the interaction device 124. Depending thereon, input information can be provided from the interaction device 124.

The knob 140 is arranged at the handle device 30 such that, relative to a direction of access, it is arranged upstream of the receptacle 80. The receptacle 80, and therefore the accessory device 14, is arranged downstream of the knob 140, relative to the direction of access. In this way, the knob 140 is not obscured by the accessory device 14, and the user can readily access the knob 140.

The knob 140 is arranged between the handle elements 50 and is positioned substantially centrally at the handle device 30.

The accessory device 14 is arranged substantially centrally at the handle device 30.

The knob 140 is arranged at the handle device 30 such that the rotational axis 142 is inclined relative to the vertical. The angle of inclination is, for example, less than 45°, preferably less than 30°. Here, the rotational axis 142 is inclined in a direction towards the user positioned behind the handle device 30.

The knob 140 is dimensioned such that it can be readily grasped and operated by the user, in particular even when the user is wearing a glove. For example, the knob has a diameter of approximately 5 cm to 10 cm. Preferably, a knurling 146 is provided on an outer circumference of the knob 140. By way of example, the knurling 146 is formed by ridges and/or nubs.

In operation of the cleaning system 10, in particular of the cleaning cart 12, the knob 140 serves to operate the accessory device 14. In particular, the possibility exists of transferring, via input at the knob 140, input information to the accessory device 14.

The interaction device 124 and the accessory device 14 can be coupled to one another via a communication connection. Preferably, the communication connection is wireless. Preferably, the communication connection is bidirectional.

In a preferred embodiment, for example, a Bluetooth-based communication connection can be established between the accessory device 14 and the interaction device 124. The aforementioned input information, which can be triggered by the user via the knob 140, can be transferred from the interaction device 124 to the accessory device 14. Conversely, in a preferred embodiment, output information can be transferred from the accessory device 14 to the interaction device 124.

It is understood that the interaction device 124 and the accessory device 14 comprise cooperating communication devices 74, 141 for establishing the communication connection. Alternatively or in addition to the Bluetooth connection, an NFC connection or a WiFi connection can be used, for example.

The interaction device 124 can comprise an indication unit in order to be able to output indications to the user depending on the output information transmitted thereto. It is advantageous for the knob 140 to comprise or form the indication unit.

In particular, a visual display unit 148 with a display screen is provided as the indication unit. Alternatively or in addition, an audible and/or haptic indication unit can be provided, for example.

By way of example, images, texts or videos can be displayed on the display unit 148 for assisting with cleaning tasks, as will be explained below.

In a different embodiment of the invention, provision can be made for the indication unit to be of the visual type but without a display screen. For example, a lighting device having one or more light elements is arranged on the knob 140 in order to be able to display different colours.

It is conceivable to provide for what is known as corona illumination.

A user application program is executably stored on the accessory device 14, which user application program assists the user in performing cleanings. In particular, a cleaning plan with cleaning tasks can be stored in the user application program, which cleaning tasks are to be performed by the user.

Via the interaction device 124, the possibility exists for the user to communicate with, and in particular operate, the accessory device 14. Via actuation of the knob 140, input information can be triggered, transferred to the accessory device 14, and processed by the accessory device 14 as cleaning-related information for operating the user application program.

Conversely, output information from the user application program can be transferred to the interaction device 124, and corresponding indications can be output by the indication unit, for example on the display unit 148.

It is understood that the display unit 72 of the accessory device 14 can output indications based on output information of the user application program. The audible and the haptic indication unit can also output corresponding indications.

Conversely, the possibility exists of providing input information for the user application program via the accessory device 14 by actuating the accessory device 14 for example by touch screen, by voice and/or by gestures.

Provision can be made for the indications and/or input possibilities on the display units 72 and 148 to be at least partially identical so that the user, according to preferences, can use either the knob 140 or the accessory device 14 for interaction—input and/or output—with the user application program.

For example, the knob 140 has proven to be advantageous in order to accomplish hygienic operation of the user application program even while wearing gloves. By the use of the knob 140, the acceptance among cleaning service providers, clients and third parties of cleaning operations performed with the assistance of the accessory device 14 is preferably increased. If the user operates the knob 140 instead of the accessory device 14, a possible impression that the user is wasting time is avoided.

Since the cleaning cart 12 can be used in dirty environment, it is advantageous for the interaction device 124 to be of waterproof, at least splash-proof, and/or dust-proof configuration.

The sensor device 126 is configured to identify spaces in which the cleaning cart 12 is located. For example, landmarks 150 are positioned at or in the spaces to be identified. By way of example, the landmarks 150 are what is known as “beacons” that can be detected and identified by the sensor device 126.

For example, a Bluetooth connection to the sensor device 126 is used to detect the landmarks 150.

By way of example, the sensor device 126 can be configured as an RFID reader to detect RFID elements. For example, a respective space is marked by an RFID element and can be identified by way of the RFID reader.

An assignment of the landmarks 150 to the spaces can be stored in the user application program. The cleaning cart 12 can determine what space it is in, depending on which landmark 150 is detected.

For data protection reasons, it can be advantageous for the position of the cleaning cart 12 to be determined and, for example, tracked, but not the position of the user with the accessory device 14.

The sensor device 128 is, for example, an RFID reader for detecting RFID elements. For example, provision can be made for cleaning utensils 152 to comprise an RFID element which is detected by the sensor device 128. For example, this provides a way of checking that the proper cleaning utensils 152 are taken along when the cleaning cart 12 is equipped. The use of the proper cleaning utensils 152 can be checked during execution of a cleaning plan.

By way of the sensor device 128, it is further possible, for example, for an RFID element of an authorization carrier 154 of the user to be detected. For example, provision can be made for enabling use of the cleaning cart 12 only if a valid authorization carrier 154 is used. Absent authorization, release of the brakes of the rollers 26 can be precluded for example. Only a valid authorization enables the user to move the cleaning cart 12.

Alternatively or in addition to checking the authorization carrier 154, it is possible, for example, to check whether the accessory device 14 is a registered accessory device and, correspondingly, whether the user is authorized to operate the cleaning cart 12. The corresponding check can be performed by a sensor device of the cleaning cart 12, for example.

Output information from the sensor devices 126, 128 and 158can be output, for example, via the display units 72 and/or 148 and/or otherwise.

By way of example, the control device 130 allows indicating elements at the receptacles 31 for cleaning utensils 152 to be controlled. In the present case, the indicating elements are configured as light elements 156. Via the light elements 156, the user can for example be signalled what cleaning utensil 152 has been provided, and should be utilized, for performing a particular cleaning. For example, a “pick by light” system can thereby be provided to aid the cleaning.

Furthermore, the cleaning cart 12 can comprise the sensor device 158. Preferably, the sensor device 158 is configured to detect an inventory of consumables that are carried on the cleaning cart 12. It is thereby possible, for example, for a user to be informed of a current or used inventory of cleaning utensils 152. For example, fill levels of receptacles 32 and/or the number of cleaning cloths onboard or used is/are detected.

In particular, information of the sensor devices 126, 128, and 158 can be transmitted to the accessory device 14 and processed as cleaning-related information by the user application program. Conversely, information can be transmitted from the user application program to the sensor devices 126, 128 and 158 and to the control device 130.

Illustratively, operation of the cleaning system 10 will be discussed in the following, with reference to FIGS. 8 to 13 in particular. Here, a preferred exemplary embodiment of the method in accordance with the invention will be carried out in which the user can operate the user application program on the accessory device 14 via the interaction device 124.

In the preferred exemplary embodiment of the method, provision is made for a cleaning plan to be created for the user before performing a cleaning operation. For example, the cleaning plan can comprise a plurality of cleaning tasks. At least one cleaning task can be assigned to a space to be cleaned.

The cleaning plan can comprise information on spaces to be cleaned.

For example, the cleaning plan can comprise space-related information on items to be cleaned in at least one space.

For example, the cleaning plan can comprise space-related information on the type of cleaning of at least one item to be cleaned in a space.

Preferably, the cleaning plan further comprises information pertaining to the equipment of the cleaning cart 12 for executing the cleaning plan.

For example, prior to a cleaning operation, a plurality of landmarks 150 are installed which are assigned to the spaces to be cleaned, wherein at least one landmark 150 is assigned to each space. In particular, such assignment can be used for more than one cleaning operation.

To this end, for example, a facility manager 162 can create a list of spaces, and an installer can attach the landmarks 150 at or in the spaces (steps S1 and S2, respectively, in FIG. 9 ). The assignment of the landmarks 150 to the spaces can be stored in a system memory, for example of the data processing device 16 (step S3 in FIG. 9 ). The corresponding assignment is stored at 160 in FIG. 8 .

The data processing device 16 can be configured as a single data processing device, for example as a server. It is in particular conceivable, however, that a plurality of computers are utilized, for example in a “cloud”.

For example, the facility manager 162 creates a cleaning plan for a cleaning operation to be performed, in which cleaning operation a cleaning plan with at least one cleaning task is provided (step S4 in FIG. 9 ). The cleaning plan is subsequently stored, for example in the data processing device 16 (S5).

It is understood that the cleaning plan can also be created directly on the accessory device 14, and the data processing device 16 and the facility manager 162 can be dispensed with.

For example, the user can load the cleaning plan into the accessory device 14 via the user application program and store it in the user application program (S6).

In a further step S7, the cleaning cart 12 is equipped with cleaning utensils 152 for carrying out the cleaning tasks depending on the cleaning plan. Here, for example, provision can be made for the cleaning utensils 152 to be placed close to the sensor device 128, detected, and registered in the user application program. Inappropriate cleaning utensils 152, if any, can be detected as incorrect by the user application program and a notification thereof provided to the user.

Preferably, an indication is provided to the user once the cleaning cart 12 has been equipped with all the necessary cleaning utensils 152.

In particular, during the subsequent steps S8 to S15, the user can repeatedly interact with the user application program via the interaction device 124. For example, inputs are performed by rotating, tilting, and/or pressing the knob 140. Confirmations from the user application program can be displayed, for example, on the display unit 148 (in addition or alternatively to the display unit 72). The inputs by the user comprise for example:

-   -   calling up the next space for which a cleaning task is stored;     -   confirming what space is to be cleaned;     -   calling up information on what item is to be cleaned in the         space;     -   acknowledging that a certain item has been cleaned in the space;     -   completion of the cleaning via a corresponding confirmation;     -   calling up cleaning instructions, for example in the form of         text or video.

It is possible for the user to be informed about a change in the cleaning plan via push message. For example, changes to the cleaning plan can be made depending on the occupancy or accessibility of a space. Push messages can be visualized on the display unit 148 or the display unit 72, for example.

In step S8, the user can call up what spaces are to be cleaned.

In step S9, the user proceeds with the cleaning cart 12 to the space that is to be cleaned.

In step S10, the sensor device 126 senses that the cleaning cart 12 is positioned at or in the correct space.

In step S11, an indication can be provided via the user application program as to what cleaning tasks need to be performed in the space. For example, the user can be instructed by “pick by light” via the light elements 156 as to which cleaning utensils 152 to pick. Corresponding acknowledgements can be made, for example, via the interaction device 124 or directly at the accessory device 14.

In step S12, the user cleans the space.

In step S13, the cleaning of the space is confirmed.

If further spaces are to be cleaned, the method is continued at step S8 and repeated for further spaces.

After completing all cleanings, the user can acknowledge, in step S14, that all spaces have been cleaned.

In step S15, following completion of the cleaning, follow-up work is done on the cleaning cart 12. Surplus cleaning utensils 152 can be removed, or a shortfall in cleaning utensils 152 can be replenished. Waste can be disposed of.

FIG. 10 shows, illustratively, the display unit 72 during execution of the cleaning plan. Cleaning tasks for the spaces 2, 10 and 7 are shown as an example. The cleaning task for space 2 has already been completed. Space 10 is currently being cleaned. Space 7 is next to be cleaned.

Pictograms 164 can provide information, intuitive to the user, about what specific cleaning is to be performed. For space 10, as an example, this comprises vacuum cleaning, wet room cleaning and emptying of a waste bin.

The user can acknowledge—by a tick or cross—via the touch screen of the display unit 72 whether or not a cleaning task has been completed.

FIG. 11 illustrates a similar situation for space 10 on the display unit 72 and on the display unit 148 of the knob 140. Here, for example, the possibility exists of acknowledging a cleaning task or the completion of the cleaning task via the knob 140.

FIG. 12 shows a similar situation. However, here, the indication of the knob 140 is different from the situation shown in FIG. 11 . For example, the user has selected a negative acknowledgement of a cleaning task, for example because the cleaning task cannot be performed.

FIG. 13 shows the pictograms 164 as integrated in the indication of the knob 140. The task selected in each case (wet room cleaning in the example of FIG. 13 ) is highlighted.

In the example of FIG. 13 , the accessory device 14 is not received in the receptacle 80 but is instead worn on the person of the user. Here, as an example, the accessory device 14 is shown in a pocket 166 of the user.

In a simplified version of the interaction device 124, no indication unit and in particular no display unit 148 is provided on the knob 140. Navigating through the display of the user application program on the accessory device 14 is nonetheless possible by way of the knob 140. Confirmations can be conveyed.

For example, in an exemplary implementation of the cleaning system 10, in practice, the following functions can be linked to the inputs to the knob 140:

For example, a confirmation that a space has been cleaned is conveyed by a press of the knob 140.

For example, a press of the knob 140 opens a space to be cleaned; task descriptions, such as “floor vacuuming”, “surface cleaning”, etc., can be marked as complete.

For example, a press can open the task activity. Here, stored task videos or task cards can be opened.

For example, a story can be selected by rotating the knob 140.

For example, a certain space can be selected first by rotating the knob 140.

In particular, further information on the status of the cleaning cart 12 can be displayed on the display unit 148. For example, it is conceivable for an indication of the remaining capacity of the battery 120, the elapsed cleaning time, and/or the remaining cleaning time to be displayed. A stopwatch can be provided. Suggestions for route optimization and for operating the cleaning cart 12 can be displayed.

LIST OF REFERENCE CHARACTERS

10 cleaning system

12, 100, 200 cleaning cart

14, 300 accessory device

16 data processing device

18 frame

20 frame lower part

22 frame upper part

24 support element

26 roller

28 ground surface

30 handle device

31 receptacle

32, 34 receptacle

36 holding part

38 receiving space

40 door

42 side wall

46 top wall

48 base element

50 handle element

52 axis

54 securing device

56, 58 connecting element

60 clamping element

62 latching element

64 clamping receptacle

66 latching receptacle

68 blocking element

70 tablet computer

72 display unit

74 communication device

76 smartphone

78 receiving unit

80 receptacle

82, 84 holding element

86 support part

88 double arrow

90 upper wall

92 lower wall

94 blocking element

96, 98 serration

102 slide

104 guide

106 double arrow

108 securing device

110 lock cylinder

112 charging unit

114 charging element

116 connection element

118 energy storage device

120 battery

122 receptacle

124 interaction device

126, 128, 158 sensor device

130 control device

134 interaction element

136 housing

138 contact region

140 knob

141 communication device

142 rotational axis

144 electrical device

146 knurling

148 display unit

150 landmark

152 cleaning utensil

154 authorization carrier

156 light element

158 sensor device

160 assignment

162 facility manager

164 pictogram

166 pocket 

1. Cleaning system, comprising a cleaning cart and an external accessory device, wherein the cleaning cart comprises a frame having rollers for moving on a ground surface, at least one receptacle for at least one of receiving and carrying cleaning utensils, and an interaction device having a hand-actuatable interaction element, wherein the accessory device is portably configured with a user application program for processing cleaning-related information being at least one of executably stored on the accessory device and operable via the accessory device, wherein the interaction device and the accessory device are coupleable with one another via a communication connection, and wherein, depending on an actuation of the interaction element by the user, input information for operation of the user application program is transmittable from the interaction device to the accessory device and is processable by the accessory device.
 2. Cleaning system in accordance with claim 1, wherein the accessory device comprises at least one output unit in the form of a display unit, an audible output unit or a haptic output unit.
 3. Cleaning system in accordance with claim 1, wherein the accessory device is a smartphone or a tablet computer.
 4. Cleaning system in accordance with claim 1, wherein output information of the user application program is transmittable from the accessory device to the interaction device and wherein the interaction device comprises an indication unit for outputting indications to the user depending on the output information.
 5. Cleaning system in accordance with claim 4, wherein the indication is at least one of a visual, audible and a haptic indication unit.
 6. Cleaning system in accordance with claim 4, wherein the interaction element comprises or forms the indication unit.
 7. Cleaning system in accordance with claim 1, wherein the interaction element is a rotary knob or comprises a rotary knob.
 8. Cleaning system in accordance with claim 1, wherein the interaction element is or comprises a push button or a toggle button.
 9. Cleaning system in accordance with claim 1, wherein the cleaning cart comprises a handle device having at least one handle element for guiding the cleaning cart by a user.
 10. Cleaning system in accordance with claim 9, wherein the interaction element is arranged at or comprised by the handle device.
 11. Cleaning system in accordance with claim 9, wherein the handle device is releasably fixable to the frame of the cleaning cart.
 12. Cleaning system in accordance with claim 1, wherein the cleaning cart comprises a receiving unit having a receptacle for receiving the accessory device.
 13. Cleaning system in accordance with claim 12, wherein the receptacle is arranged at or comprised by the handle device.
 14. Cleaning system in accordance with claim 12, wherein the receptacle is variable in size.
 15. Cleaning system in accordance with claim 12, wherein the receiving unit comprises a blocking element for securing the accessory device against removal from the receptacle.
 16. Cleaning system in accordance with claim 12, wherein a charging unit for charging the accessory device is arranged at the receiving unit or wherein the receiving unit comprises a charging unit.
 17. Cleaning system in accordance with claim 1, wherein the cleaning cart comprises an energy storage device for providing electrical energy for at least one of the interaction device and the accessory device.
 18. Cleaning system in accordance with claim 1, wherein the cleaning system comprises a data processing device which is spatially remotely arranged from the cleaning cart and from the accessory device and which is, or is bringable, in communication connection with the accessory device, and wherein cleaning-related information of the user application program is transferable from the accessory device to the data processing device and/or vice versa.
 19. Cleaning system in accordance with claim 1, wherein a cleaning plan is stored in the user application program, in which cleaning plan at least one of the following is stored: information on spaces that are to be cleaned; space-related information on items to be cleaned in at least one space; space-related information on the type of cleaning of least one item to be cleaned in a space; information pertaining to the equipment of the cleaning cart for executing the cleaning plan.
 20. Cleaning system in accordance with claim 19, wherein, in execution of the cleaning plan, instructions for the user are providable on at least one of the accessory device and an indication unit of the interaction device.
 21. Cleaning system in accordance with claim 19, wherein, in execution of the cleaning plan, inputs by the user are processable via the interaction element for performing the cleaning plan.
 22. Cleaning system in accordance with claim 19, wherein the cleaning plan is changeable, in particular after execution has started.
 23. Cleaning system in accordance with claim 1, wherein the cleaning system or the cleaning cart comprises a sensor device with which a space in which the cleaning cart is positioned is identifiable.
 24. Cleaning system in accordance with claim 23, wherein depending on the identified space, instructions for cleaning the space are providable, depending on a cleaning plan stored in the user application program.
 25. Cleaning system in accordance with claim 23, wherein indicating elements are arranged on at least one of receptacles of the cleaning cart and receptacles for cleaning utensils, which indicating elements are activatable depending on the identified space, in particular depending on a cleaning plan stored in the user application program for the space.
 26. Cleaning system in accordance with claim 1, wherein the cleaning system or the cleaning cart comprises a sensor device with which at least one of the accessory device of the user and an authorization carrier of the user is detectable.
 27. Cleaning system in accordance with claim 1, wherein the cleaning system or the cleaning cart comprises a sensor device with which cleaning utensils that are carried on the cleaning cart are detectable.
 28. Cleaning system in accordance with claim 1, wherein the cleaning system or the cleaning cart comprises a sensor device with which the inventory of consumables that are carried on the cleaning cart is detectable.
 29. Method for operating a cleaning system, the cleaning system comprising a cleaning cart which is movable via rollers on a ground surface and is configured for at least one of receiving and carrying cleaning utensils, wherein the cleaning cart comprises an interaction device having a hand-actuatable interaction element, the method comprising: detecting an actuation of the interaction element; transmitting input information for a user application program from the interaction device to a portable external accessory device; processing the input information for operating the user application program. 